To discover the leakage and emission of dangerous chemical gas in time,realize fast location of the emission source and forecast of diffusion range,and improve the processing speed of chemical gas leakage incident,the distributed gas detection platform based on Zigbee and multi-sensor fusion is established for the system. The multi-sensor fusion is adopted for real-time monitoring of the environment. The appropriate interpolation algorithm is selected for the obtained data. The Surfer soft-ware is used to construct gas diffusion contour lines in combination with specific environmental information so that the gas diffu-sion range can be forecasted. The appropriate localization algorithm is selected quickly according to positioning influencing fac-tors and fuzzy control algorithm so as to realize the location of the diffusion source in combination with location information of the reference node. The practice application result shows that the system can perform real-time online detection of chemical gas concentration and meanwhile modulate the chemical gas diffusion contour lines,which realizes the forecast of gas diffusion range and quick processing of the diffusion.%为了及时发现危险化工气体的泄漏与排放,实现对排放源的快速定位以及对扩散范围的预测,提高对化工气体泄漏事件的处理速度.基于此,建立一种基于ZigBee和多传感器融合的分布式气体检测平台.采用多传感器融合对环境进行实时监测,针对检测得到的数据,选择合适的插值算法,结合具体环境信息采用Surfer软件构造气体扩散等值线,对气体的扩散范围进行预测;根据影响定位的因素和模糊控制算法,快速选择合适的定位算法,结合参考节点位置信息实现对扩散源的定位.实验表明,系统能对化工气体浓度进行实时性在线检测,同时还能对化工气体的扩散等值线进行模拟,实现了对气体扩散范围的预测,以及对扩散的迅速处理.
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